Multidisciplinary design and optimization of automotive structures - A parametric approach

The use of modern parametric modeling systems has enabled the rapid design and modification of geometry models. We have extended that capability to enable rapid analysis and optimization in a number of disciplines. We have used a parametric modeling system to define classes of vehicles which can be easily modified to represent different size vehicles based on the same general design. By building a system, which rapidly generates analysis models in several disciplines, we can perform multidisciplinary analysis and optimization. The disciplines currently being studied are linear structures, aerodynamics, fuel economy, and crashworthiness. To be effective, an automotive MDO system must consider the effects of material choice, geometry changes, topology changes, addition and deletion of various structural members, and the placement of various vehicle components. I will discuss the insight we have gained from multidisciplinary analysis and optimization using a parametric MDO system and how the information can be used to guide the overall vehicle design process.